Land IP denial of service.
Max CVSS
5.0
EPSS Score
0.15%
Published
1997-12-01
Updated
2008-09-09
Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
Max CVSS
5.0
EPSS Score
0.28%
Published
1999-01-11
Updated
2022-08-17
Cisco PIX firewall and CBAC IP fragmentation attack results in a denial of service.
Max CVSS
5.0
EPSS Score
2.15%
Published
1998-08-18
Updated
2018-10-30
Attackers can crash a Cisco IOS router or device, provided they can get to an interactive prompt (such as a login). This applies to some IOS 9.x, 10.x, and 11.x releases.
Max CVSS
5.0
EPSS Score
2.07%
Published
1998-08-12
Updated
2022-08-17
Some classic Cisco IOS devices have a vulnerability in the PPP CHAP authentication to establish unauthorized PPP connections.
Max CVSS
7.5
EPSS Score
1.50%
Published
1997-10-01
Updated
2008-09-09
In Cisco IOS 10.3, with the tacacs-ds or tacacs keyword, an extended IP access control list could bypass filtering.
Max CVSS
7.5
EPSS Score
0.62%
Published
1995-07-31
Updated
2008-09-09
The "established" keyword in some Cisco IOS software allowed an attacker to bypass filtering.
Max CVSS
5.0
EPSS Score
1.22%
Published
1998-09-01
Updated
2022-08-17
Buffer overflow in Cisco 7xx routers through the telnet service.
Max CVSS
5.0
EPSS Score
2.07%
Published
1997-12-15
Updated
2008-09-09
AAA authentication on Cisco systems allows attackers to execute commands without authorization.
Max CVSS
7.5
EPSS Score
0.28%
Published
1998-01-01
Updated
2024-02-07
In Cisco routers under some versions of IOS 12.0 running NAT, some packets may not be filtered by input access list filters.
Max CVSS
5.0
EPSS Score
1.22%
Published
1999-04-01
Updated
2008-09-09
ICMP information such as (1) netmask and (2) timestamp is allowed from arbitrary hosts.
Max CVSS
2.1
EPSS Score
88.08%
Published
1997-08-01
Updated
2022-11-14
Cisco Gigabit Switch routers running IOS allow remote attackers to forward unauthorized packets due to improper handling of the "established" keyword in an access list.
Max CVSS
10.0
EPSS Score
0.56%
Published
1999-06-10
Updated
2022-08-17
Cisco Catalyst 2900 Virtual LAN (VLAN) switches allow remote attackers to inject 802.1q frames into another VLAN by forging the VLAN identifier in the trunking tag.
Max CVSS
7.5
EPSS Score
0.63%
Published
1999-09-01
Updated
2017-12-19
Web Cache Control Protocol (WCCP) in Cisco Cache Engine for Cisco IOS 11.2 and earlier does not use authentication, which allows remote attackers to redirect HTTP traffic to arbitrary hosts via WCCP packets to UDP port 2048.
Max CVSS
7.5
EPSS Score
0.62%
Published
1999-12-31
Updated
2017-10-10
Cisco IOS 9.1 and earlier does not properly handle extended IP access lists when the IP route cache is enabled and the "established" keyword is set, which could allow attackers to bypass filters.
Max CVSS
7.5
EPSS Score
0.57%
Published
1992-12-10
Updated
2008-09-05
Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.
Max CVSS
7.5
EPSS Score
0.35%
Published
1999-12-31
Updated
2017-12-19
Vulnerability in Cisco IOS 11.1 through 11.3 with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled input interface to an output interface with a logical subinterface, as described by Cisco bug CSCdk43862.
Max CVSS
7.5
EPSS Score
0.27%
Published
1999-12-31
Updated
2017-12-19
Vulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the "established" keyword.
Max CVSS
7.5
EPSS Score
0.21%
Published
1992-12-10
Updated
2008-09-05
Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot.
Max CVSS
5.0
EPSS Score
0.65%
Published
2000-04-20
Updated
2008-09-10
The on-line help system options in Cisco routers allows non-privileged users without "enabled" access to obtain sensitive information via the show command.
Max CVSS
2.1
EPSS Score
0.05%
Published
2000-05-03
Updated
2008-09-10
Classic Cisco IOS 9.1 and later allows attackers with access to the login prompt to obtain portions of the command history of previous users, which may allow the attacker to access sensitive data.
Max CVSS
2.1
EPSS Score
0.05%
Published
2001-03-12
Updated
2016-09-21

CVE-2000-0380

Public exploit
The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.
Max CVSS
7.1
EPSS Score
95.97%
Published
2000-04-26
Updated
2008-09-10
Buffer overflow in Cisco TACACS+ tac_plus server allows remote attackers to cause a denial of service via a malformed packet with a long length field.
Max CVSS
5.0
EPSS Score
0.73%
Published
2000-05-30
Updated
2017-10-10
Cisco Gigabit Switch Routers (GSR) with Fast Ethernet / Gigabit Ethernet cards, from IOS versions 11.2(15)GS1A up to 11.2(19)GS0.2 and some versions of 12.0, do not properly handle line card failures, which allows remote attackers to bypass ACLs or force the interface to stop forwarding packets.
Max CVSS
5.0
EPSS Score
0.73%
Published
2000-10-20
Updated
2008-09-05
The HTTP server in Cisco IOS 12.0 through 12.1 allows local users to cause a denial of service (crash and reload) via a URL containing a "?/" string.
Max CVSS
5.0
EPSS Score
0.04%
Published
2000-12-19
Updated
2018-05-03
602 vulnerabilities found
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